Carbon sheets, etc., with margin guides



Sept. 11, 1951 KRAUS 2,567,435

CARBON SHEETS, ETC WITH MARGIN GUIDES Filed Nov 50, 1950 HERMAN J. KRAUSIN VEN TOR.

Attorneg Patented Sept. II, 41951 ETQ, WITH MARGIN GUIDES Herman J.Kraus, Pittsburgh, Pa. Application November 30, 1950, Serial No. 198,268

CARBONLSHEETS,

1 Claim.

My invention relates to carbon paper sheets, and backing sheets,particularly intended for use as centering guides for typewrittenletters; stencil sheets; backing sheets; offset printing and hectographin all forms; multigraphing; lithographing, andoflice printing generallyOne object of my invention is to provide sheets of carbon paper, backingsheets or. the like as above stated, that will enable the user to placetypewritten or printed matter on a letter sheet or the like insymmetrical or balanced position with respect to the top, bottom and thelongitudinal edges of the sheet upon which typing, printing or otherimpressions are to be made.

Another object of my invention is to provide carbon paper, backingsheets or guide sheets marked along the longitudinal and horizontaledges in such manner that the markings (which may be in the form ofnotches, tabs, punched holes, or printed markings or coloring) will showto the user the points at which the typing or printing must be startedand ended in order to produce the desired balanced effect.

Still another object of my invention is to provide a carbon sheet ora-guide sheet of the character referred to whose upper and lower edgesare so marked that it can be used with either of its horizontal edgesuppermost, with the guide notches or tabs properly positioned forguiding the operation to an accurate balancing of the work, whereby theoperator is not required to so turn the sheet as to have only a certainone of its horizontal edges in the uppermost position, and whereby thecarbon sheet can be used for a period of time with one edge uppermostand thereafter with the other edge uppermost to thereby frequentlyeconomize in carbon paper life.

As shown in the accompanying drawing, Fig- 'ure 1 shows a carbon sheethaving notches or serrations in its edges to serve as guides; Fig. 2shows a letter sheet or the like placed upon the carbon sheet of Fig. 1;Fig. 3 shows a modification of the structure of Fig. 1, wherein onevertical edge of the carbon sheet has notches and the other verticaledge thereof tabs, and Fig. 4 shows a letter sheet or the like appliedto the sheet of Fig. 3.

Referring first to Figs. 1 and 2, the carbon paper or guide sheet 5 hasnotches I, 8, 9, Hi and l I in its vertical edges, the notches in oneedge being duplicates of the other notches, both as to location andsize. The sheet is similarly notched in its upper and lower edges, butthe notches in the lower edge are offset to the right with re- 2 spectto the notches in the upper edge as -indi cated by the dash lines I2 andI3. This arrangement renders the carbon reversible or usable with eitherend uppermost and still have guides at the right hand edge. The notches9 are placed half way between the upper and lower edges of the sheet asindicated by the numeral I4.

The deep notches aa are at equal distances from the center notch 22 attheir lowest points." For letter width sheets, these deepest pointswould be about three inches apart, to serve as a; guide for three-inchheadings. Points b-'-b would be each one inch from the center notch 22to serve as guides for two-inch headings. The points c-c would be eachtwo inches from the notch 22 and therefore serve as guides for four'inch headings. The other notches such as at e are located at variousother distances and with various depths. The notches e can also serve asheading guides but are primarily intended for marginal guides, eachbeing one inch from the adjacent marginal edge of the sheet. The adjacent notches will, of course, be located at other definite distancesfrom the marginal edges.

The corners of the sheet are cut away as shown at I5, I6, I1 and I8.This cutting away of the corners serves two purposes as hereinafterexplained.

In Fig. 2, a letter sheet 20 is shown as placed upon the carbon sheet ofFig. 1, the left hand vertical edges of the two sheets being flush withone another, but the right hand edge of the carbon sheet protruding asshown at I5 and I8. This protruding portion of the carbon sheet ispreferably not coated on its rear side. The other edge portion too, isuncoated in that area between the broken line 2| and the adjacent edgeof the sheet. When the sheets are assembled as shown in Fig. 2, theoperator will find that the upper notch 22 is in the vertical centerline of the letter sheet 20, and he, of course, knows that the exposednotch 9 is at the horizontal midline, with the other notches indicatingcertain distances between these midlines and the adjacent edges of thesheet. He is thus enabled to effect accurate balancing of the matter tobe typewritten or printed.

When the papers are in the typewriter the operator can turn the top edgeof the letterhead back slightly to expose the notches in the carbonsheet, or there will be some flaring in the upper looise1 edges of thepapers tomake the notches vis b e.

The beveled cuts at l5 and I6 facilitate entry] danger of curling of thecorners of the carbon paper and the bevel at l8 serves, in addition tothe notch II, to indicate approach to the end of the page.

When the operator desires to remove the carbon from the letter sheets,he can grasp the protruding edge at the vicinity of the numeral I8between the fingers of one hand and the letter sheets at the cornersabove the bevel IS, with the fingers of the other hand.

When the sheet is turned to bring its other end uppermost, the notch 23will then occupy the position of the notch 22 in Figs. 1 and 2, and thenotch 23 will then be at the vertical center line of the letter sheet.In this instance, the uncoated portion of the carbon sheet at 21 will beexposed at the right hand side of the letter sheet 20, but the notches 9still, of course, being at the horizontal midline of the letter sheet.

Referring now to Figs. 3 and 4, I show a carbon sheet 25 which isnotched at its upper and lower edges in the same manner as the sheet ofFig. 1. Also, the left hand edge of the sheet is notched as are thelongitudinal edges of Fig. 1. However, the right hand edge of the sheethas tabs 26, 21, 28, 29 and 3llinstead of notches. The rear faces ofthese tabs are not coated nor is that portion of the sheet to the leftof the broken line 3|. Ordinarily, the sheet will be used with the tabsprotruding at the right hand of the sheet, but the sheet can be reversedend-to-end, in which case the tabs 26 to 30 will be concealed at thelefthand edge oithe sheet and the notched strip-like area adjacent to 31will be exposed at the right hand edge of the sheet as are the mat h sin Fis- I In cases where the coated area of the carbon sheet is made ofthe same width as the letter sheet, the respective series of guidenotches on the top and bottom will be in vertical alignment with oneanother. will project from the right handedge of the sheet, when in oneposition, and when the carbon is reversed, they will project from theleft hand edge In this case, the signal tabs 4 thereof so that it ispossible to have notches 22 and 23 in alignment with each other, andeither end can still be used uppermost.

Various of the signal or indicator marks, and particularly those at thelongitudinal edges, will be useful also where continuous forms are used,including those wherein the paper is supplied in rolls or pleat-likefolds, with tear-oft linesor perforations at certain locations.Likewise, this feature of the invention is applicable to the so-calledsnap out sets of forms, which are bound together and from which thecarbon sheets can be removed, after the typing has been completed.

I claim as my invention:

A carbon paper or backing sheet of generally rectangular form havingguide tabs on only one vertical edge, one tab being at the horizontalmidline of the sheet and the other tabs being in relatively balancedpositions above and below the midline tab, the spaces between the .tabsbein of sufficient width to accommodate the fingers .01 a user whenalining the carbon paper with other sheets, and there being notches inthe upper edge of the carbon paper, one of which. notches is positionedmidway between the vertical edges of.-

the carbon sheet, exclusively of the tabs, :there being. other notchesin said upper edge in relatively balanced positions at opposite sides ofthe middle notch.

HERMAN J. KRAUS.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 646,566 Bailey Apr. 3, 19001,361,553 Smith Dec. 7, 1 920 1,850,236 Kelly Mar. 22, 1932 1,931,168Scott Oct. 17, 1933 2.178.878 McAdams Nov. 77. v1.939

